Experimental Evaluation of Transonic Stators Preliminary Analysis and Design Report

A flow-generating rotor has been designed under NASA contract NAS3-7614 to enable three transonic stators to be tested. The stators were designed by NASA in conjunction with the Contractor. Design analyses were conducted and the results indicate that the rotor will produce the required inlet flow to the stators. Structural and vibration analyses indicate that resonances and critical speeds occur outside the operating range and that the component stresses will be well within the capabilities of the materials used. Design details of the flow generation rotor and the three transonic stators are presented

Replication of the densovirus of Casphalia extranea (Lepidoptera Limacodidae) on an established cell line

Les larves du Lépidoptère #Casphalia extranea ravagent périodiquement les plantations de palmier à huile et de cocotier en Côte d'Ivoire. Le principal agent pathogène capable de réguler les populations de ce ravageur est un densovirus (#Parvoviridae). En dehors de son hôte, ce virus se multiplie dans la lignée cellulaire SPC BM40 de #Bombyx mori$. Le taux de multiplication du virus en culture in vitro est de 10 au bout de 15 jours. C'est la première fois qu'un densovirus se reproduit en lignée cellulaire. (Résumé d'auteur